Police squad cars are seen parked near Justin Bieber's home near Los Angeles on Jan. 14, 2014. The singer was served with a search warrant as authorities continue to investigate an alleged incident, in which he is accused of throwing eggs at his neighbor. / Justin Bieber hands out toys to fans at a screening of his new movie 'Believe' on Dec. 16, 2013.

Rapper Lil Za has been arrested on suspicion of felony drug possession during a morning police raid of Justin Bieber's home that is part of an investigation into an alleged egg-throwing incident involving the pop star and his neighbor.

Bieber, 19, who has not commented about the incidents, which are unrelated. Police served him with a search warrant on Tuesday, Jan. 14, and said he was cooperative. He is accused of throwing eggs at his neighbor and 13-year-old daughter and is suspected of felony vandalism. Police had sought to find "video surveillance or other possible evidence in the vandalism that occurred on January 9."

Police were seen leading a young man in handcuffs out of the house and into a squad car -- one of eight that arrived at Bieber's home in Calabasas, near Los Angeles, where several people are believed that have been staying. The man was detained and identified later by police as Xavier Domonique Smith, known by his rapper name, Lil Za.

Police said on Tuesday afternoon that they believe the drugs they found in Lil Za's possession are Ecstasy and the prescription anxiety medication Xanax. The substances have yet to be tested.

UPDATE: Lil Za was re-arrested inside the jail for felony vandalism charges, stemming from an incident that occurred while he was inside his cell. He was later released on a $20,000 bond (see a photo of him leaving the jail, below.)

No charges filed against Justin Bieber

Earlier in the day, a police spokesperson said he believed cocaine was the drug that was found -- and that it was "in plain view." He said Bieber "was not connected" to it.

No criminal charges have been filed against the singer. A Los Angeles County Sheriff's Department statement said that "the vandalism damage is estimated by the homeowner to be approximately $20,000." The case was treated as a felony because it was larger than $400. Police are continuing to investigate the egging allegations and plan to analyze evidence they collected.

"There is a victim in this case who had extensive damage done to their home," the police spokesperson said, adding that the houses in Bieber's neighborhood are "of a quality that any damage is going to be extensive."

Bieber's neighbor's home contained imported wood and brick that was "significantly damaged," he said.

"I mean, I get that it was done with eggs, which makes you feel like it's a lower-level crime, but a felony crime is a felony crime no matter how you commit it," he said. "And this crime rose to the felony section and a judge signed a search warrant saying that we should go and get evidence related to the felony crime. The damage I believe was from the eggs and the damage that the eggs caused to the residence."